If 2=6
3=12
4=20
5=30
6=42
Then 9=?

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Solution

The correct option is A 90
As per the question the pattern is as below:
2 X 3 = 6
3 X 4 = 12
4 X 5 = 20
5 X 6 = 30
6 X 7 = 42
7 X 8 = 56
8 X 9 = 72
9 X 10 = 90
So the answer is 90.

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Similar questions

If A = {3, 6, 9, 12, 15, 18, 21}
B = {2, 4, 6, 8, 10, 12, 14, 16}
C = {5, 10, 15, 20}

$\begin{matrix} A & B 1. B - C & A . {5, 10, 20} 2. A - C & B . {3, 9, 15, 21} 3. C - (A - B) & C . {3, 6, 9, 12, 18, 21} 4. C \cap (A - B) & D . {15} E . {2, 4, 6, 8, 12, 14, 16} \end{matrix}$

Q. Find the mean deviation about mean for the following data.

CI	$0 - 5$	$5 - 10$	$10 - 15$	$15 - 20$	$20 - 25$	$25 - 30$	$30 - 35$	$35 - 40$	$40 - 45$	$45 - 50$
$f$	$9$	$13$	$6$	$12$	$9$	$6$	$10$	$15$	$6$	$4$

$(5 + 6 \times 3 - 4) + (5 \times 6) \times (14 - 7) + (12 \div 4 \times 9) = ?$

Q. Read each of the following ratios:

(1) 7 : 9
(2) 10 : 6
(3) 30 : 10
(4) 5 : 20
(5) 1 : 4

Q. Find the mean of the following

20

observations:

12, 2, 3, 3, 2, 12, 12, 1, 4, 5, 4, 4, 3, 11, 11, 2, 6, 2, 3, 6, 12

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If 2=6 3=12 4=20 5=30 6=42Then 9=?

The correct option is A 90As per the question the pattern is as below:2 X 3 = 63 X 4 = 124 X 5 = 205 X 6 = 306 X 7 = 427 X 8 = 568 X 9 = 729 X 10 = 90So the answer is 90.

If 2=6
3=12
4=20
5=30
6=42
Then 9=?

The correct option is A 90
As per the question the pattern is as below:
2 X 3 = 6
3 X 4 = 12
4 X 5 = 20
5 X 6 = 30
6 X 7 = 42
7 X 8 = 56
8 X 9 = 72
9 X 10 = 90
So the answer is 90.